Doorcheck



H. PERRY Jan. 13, 1931.

DOORCHECK vFiled Dec. 1, 1928 2 Sheets-Sheet l' gnua'nfoc H. PERRY DOORCHECK Jan. 13, 1931.

Filed Dec. 1, 1928 2 Sheets-Sheet 2 llumll e Patemed Jail, 13, 1931 I bm mk iApblicatiomfiled ,Decehiher "Sei'ie If 1191323914, i N

This invention relates to improvements in (1601' Checks Or closers and relatesgparticu larly to impioved means for mountingan air? cushib'n" check which will effectively pre vent adoor to which it is attached from closingjvidlenfily and whichwill also permit the do'o'rto Ibe Opened to its full-est extel'lc. H

' The. presentinvention eonteniplates, the,

jprovisionef ayIiIide'r'piVOtaHy mountedat m one'efide upon adder atthe top a d adjacent t-hefrees ide edge there 0f and earrying'a pis t on p'ivqtally connected to an arm which is 111, turf; rpivotally attached to the {under sifiof the (1001* f-framerat-cfhe t'o'p; fMeansiis' f 1- associated with 1 the arm "whereby its move- I ment willbe retardedso that when the door 13013611 :119 'pisten will" first :be -c1 ravn from :.rted"upeiftheFiarm'Whiehjwill swing O l-it Q o ward'lyiwiththe door-thufallo wing the-deor 1 to ewing bajckto an'operi position inja plane substantially pmallel;to theface df thefmme in which thud-oer 'isi'nieiin'tedr Upo'n the doerl being released fihe -pivoted arm is first fel ce'ddnwardly beneatha fesilienfi retard dagfricfaion plate a nd zifberthearfif has come fie a step ftfhepisten is "foreedf into the {03 E11 1 der, cemptessing'wai'r therein which slowly;

s peci fifmtiqni, With fiche: juriderstandi'ng iho'W through the frontp0l igibl'r'f d dedf aii d the f device" ,embddying'i the preseiitf invention gl-pe Ffigupef 2; s; ;n levafibm may 5 015 1556 50 upper portion of the' dooi' structure show-mg similar teFigiirelfbut showing the deer and heekii n cipeh pesitien I s'tztfifial-lY u-p011 the line of Figure 1 5 *Flgu'r'e- 5 'ise sectional View taken l subj l'gu pefi' is 1a View in end elevatidfi of th piston cy'linder showing-the ;piv0tg1; su p rt thepe forr 1 e in 'like dilimeral s bf refeience indicage'jthe v we, thedoor@h Gkmpri ingtInSinven-1 the doorgfirameisz v e sp erfd ing pairtsy throughout theseveral ftiei'l Shown applied -'t0,;-$ereei1 ddors l,

this doqrlbeir lg mounted,

the:sprin -eqrmrolled typewhieh are placed. underfytehsion when the "deerjisfopenedend =5 actfte f 0ree the idoor fie c10sed1p0iti0nfi vhen ifi'ismeleas'edf h 1 5 3 pwo movement toward or away from the body 16 l so that as the check arm ll is swung with thedoor to open position it slips from beneath the resilient side portions of the friction plate andwhen the door returns to closed position the check arm is'forced beneath the resilient portion of the plate adjacent thereto and has'its movement'retarded thereby,

Lying beneath the frictionplate 17 and the arm portion 18 thereof is a substantially triangular stop plate 21, a portionofjeach of two edges of which is formed toprovide the flange 22 against which one side edgeof the check arm 14 abuts when itis. brought to door closed position. i

Gve-rlying the friction plate17 is a friction plate spring 23 which is of substantially T-shaped configuration, each of the arms 24 thereof being turned downwardly at their ends as indicated at 25, to bear against the friction plate 17 in the manner shown, these down turned ends of the bearing upon the friction plate adjacent the aforementioned up turned free sidesthere'of. The intermediate portion 26 of the spring-is traversed by the bolt 15 which holds the friction plate and checkarmv in position while for-- wardly of the holding bolt 15 the spring has passed therethrough, between the ends of the arms thereof the .tensioning screws 27 which force the,ends of the arms downwardly" againstthe friction plate, 7 1 flhe piston cylinders adjacent the forward or attached end thereof is provided with 'suitable air vescape3apertures 28 by means of which theain within the cylinder is allowed to escape slowly during the closing operation o f-t to door thus effectively checking this op-. eration and preventing the door from slamming'. jAt its rear end the'pistonicylinder has. attached to the'cap'an arcuate leaf spring 29 which isinterposed between the cylinder and the door, but isnormally out of contact therewith.

When the door is swung to open position the cylinder-4L will of .course;be drawn outwardly therewith and will .pull upon the piston rod 12a'nd thecheck arm 14. The

7 check arm permits the door .to be swung to an'openposition in a planesubstantially l parallel with theclosed'positionof thedoorl WVhen the door is released it will, ofcourse,

be swung to by; the spring hingesfi and'the compression of the air; in the cylinder by the piston prevents, during the first :partof the movement of the door,*the immed-iate re turn of the piston-to the forward end of the cylinder, and the check arm ,is therefore in oved first, ibeing swung around against the V stopi22; However, itsmovement just previous to its contact with the stop will be checked by theresistance'offered to: it as it' moves under; the friction plate 17; After the check arm has returned to position,,or while itis returning to position, vthev piston opening'do'or as well'a'sia right hand opening From the forego ng description it will be readily seen that the structure to which the checkarm 14 is attached may be easily reversed to adapt the door check to a left hand door in which position it willact inthe same manner as described in connectionuvith the position in which it is here shown,

Having thusdescribed my invention what I claim is e v V Y 1. In combination in a door. checking deice, a piston carrying cylinder designed to be pivotally attached to a door, said piston having a connecting rod attached thereto, a checirarm pivotally attached at one end to said rod and designed to have its other end attached to a fixed structure adjacent the door, and means free'from engagement with the. check arm'when the door is open acting receive and check the inward swinging movement of arm asjthe door closes.

2. In combination in a door check structure, a piston and piston rod carrying a cylinder designed to be pivotally attached at oneend to a door adjacent the free forward edge thereof, a'check arm having pivotal connection atone end with said rod, means for pivotally securing the other end to a fixed structure designed to be positioned adjacent the hinged side'of a door, and re silient frictional means acting upon said'arm to oppose 1ts free movement to coa'ct w th the retarding action of the piston'jand cylinder substantiallylas described.

edge thereof, a check arin having pivotal connection at one end with said rod, means 151; for pivotally securing the other end to a fixed structure designed to be positioned adjacentthe hinged side'of adoor, resili nt frictional means acting upon said arm to oppose 7 its free movement, tocoact with the retard- 11;; i.- ing action of the piston and cylinder substan-.. L tia lly as described, and resilient. means disposed between the cylinder and the door and placed under tension when Ethe' door is opened, :to give an initial closing movement thereto, 1 A 1 7' ALA mountingjfor a'check arm of a door check designed tocoact with a cylinder and piston in the manner described, comprising a stop plate againstqwhichthe arm de- L" signed to abut, a friction platesecured adjacent thestop plate and designed to have the 7 check armmove therebeneath into frictional engagement with one face thereof; and a resilient plate secured overone face of'the fricl tion plate and acting to re-enforce thefriction plate in its opposition to the movement of the check arm over the face thereofysaid i check arm mounting being of'a character to adapt it for usein connection withjright or left hand opening doors. I

5. In combination in a door check, a piston carrying cylinder designed to be pivotally. attached toa door, said piston having a con- 'necting'rod attached thereto, a check arm having pivotal connection 'at one end with said rod'and designed to 'have its other end i pivotally attachedto a fixed structure adjacent the door, and means arranged adjai y a door check of the characterdescribed, comprisingra'fixed plate having a stop against which the arm is designed to be brought to' rest, pivot meansffor said arm, and a resilient friction plate overlying a portion of said' arm and formed and arranged to have an in creasing amount of the check a'rm moved 1 therebeneath as the arm is swung in one'direction about said pivot means,.said pivot means securing the friction plate in position over the stop plate.

7 'A'mounting for a pivoted'ar'm of a door check designed to coact with a cylinder and piston in the manner described, comprising a plate havingastop against, which the arm is I designedjto be broughtto rest, a pivot for "one end of said arm, a resilient friction plate overlying the first .mentioned plate and formed and arranged to have anincreasing v amountlof said arm moved therebeneath and m y r in frictional contact-therewith as the arm is swung in one direction about said pivot, and

'- It a resilient plate overlying the face" of the friction plate opposite the face engaging said arm and exerting pressure upon a porvtion of, the same beneath which the arm I" moves when swinging in the said direction.

In testimonywhereof I hereunto afiix my signature. r 

